Fully integrated high-speed voltage controlled ring oscillator
US4884041A · kind A · utility
53Cited by
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1Claims
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Inventor
Key dates
| Filing date | Jun 5, 1987 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Jun 5, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/693
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An N ring element ring oscillator merged with an M element ring oscillator by using a linear combining circuit. By adjusting the control voltage, the oscillation frequency can be varied from 1/2*N*T.sub.d (where T.sub.d is a gate delay) to 1/2*M*T.sub.d. Other embodiments provide extended frequency tuning range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.